CN219832536U - Compression bar device, drawer seat and direct current breaker - Google Patents

Abstract

The utility model discloses a compression bar device, a drawer seat and a direct current breaker, wherein the compression bar device is used for the drawer seat and comprises the following components: the insulation protection plate is arranged in the main body of the drawer seat, covers and fixes the fixed contact in the main body, and is provided with an opening allowing the connecting row of the breaker body to pass through, and the connecting row is used for plugging the fixed contact; the safety baffle is rotatably arranged on the insulating protection plate through the rotating shaft, and can rotate to expose or shade the opening; the compression bar can be installed in the main body in a pressing mode and is used for driving the rotating shaft to rotate so as to drive the safety baffle to open and close. When the circuit breaker body is disconnected with the drawer seat, the safety baffle blocks the opening on the insulating protection plate, so that the safety risk caused by the exposure of the static contact is avoided, namely the safety protection of the contact of the drawer seat is realized.

Description

Compression bar device, drawer seat and direct current breaker

Technical Field

The utility model belongs to the technical field of circuit breakers, and particularly relates to a compression bar device, a drawer seat and a direct current circuit breaker.

Background

The direct current universal circuit breaker, the isolating switch and the like are widely applied to the fields of new energy sources (photovoltaic, wind power) and the like, and generally, higher voltage DC 800V-DC 1500V is required.

The drawer type direct current breaker comprises a breaker body and a drawer seat, wherein the two parts can be separated and connected into a whole through plug-in fit. When the breaker body is separated from the drawer seat, the electrified static contact on the drawer seat is exposed outside, so that the safety of personnel is difficult to ensure.

In summary, how to perform safety protection on the stationary contact of the drawer seat after the drawer seat is separated from the breaker body is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, a first object of the present utility model is to provide a compression bar device, which aims to protect the stationary contact of the drawer seat after the drawer seat is separated from the breaker body.

A second object of the present utility model is to provide a drawer seat.

A second object of the present utility model is to provide a direct current circuit breaker.

In order to achieve the first object, the present utility model provides the following solutions:

a compression bar apparatus for a drawer base, comprising:

the insulation protection plate is arranged in the main body of the drawer seat, and covers and fixes the fixed contact in the main body, an opening allowing a connection row of the breaker body to pass through is formed in the insulation protection plate, and the connection row is used for being connected with the fixed contact in an inserting mode;

the safety baffle is rotatably arranged on the insulating protection plate through a rotating shaft and can rotate until the opening is exposed or shielded;

the compression bar can be installed in the main body in a pressing mode and is used for driving the rotating shaft to rotate so as to drive the safety baffle to open and close.

In a specific embodiment, the compression bar apparatus further comprises a resilient return member;

the elastic resetting piece is arranged in the main body and is used for driving the compression bar to reset;

normally, the safety baffle blocks the opening;

when the pressure lever is pressed, the pressure lever overcomes the elastic force of the elastic reset piece to drive the rotating shaft to drive the safety baffle to open so as to expose the opening.

In another specific embodiment, a driving part is arranged on the outer wall of the rotating shaft, and the side wall of the compression bar is hinged with the driving part;

or alternatively

The rotary shaft is rotatably installed on the insulating protection plate through the torsion spring, the torsion spring drives the safety baffle to seal the opening, the abutting protrusion is arranged on the outer wall of the rotary shaft, the pressing part abutting against the abutting protrusion is arranged on the side wall of the pressing rod, and when the pressing rod is pressed, the pressing part presses the abutting protrusion to drive the rotary shaft to overcome the torsion of the torsion spring, so that the safety baffle is opened to expose the opening.

In another specific embodiment, the compression bar apparatus further comprises a compression bar box;

the compression bar box is arranged on the main body and is positioned on one side of the insulation protection plate;

the compression bar is arranged in the compression bar box, the top end of the compression bar extends out of the compression bar box, a strip hole allowing the driving part or the pressing part to pass through is formed in the side wall of the compression bar box, and the strip hole is formed along the pressing direction of the compression bar;

the elastic resetting piece is arranged in the compression bar box, and the top end of the elastic resetting piece is abutted with the compression bar;

or,

the bottom of the pressure bar box is opened, and the elastic resetting piece is arranged on the main body and penetrates through the bottom of the pressure bar box to be in butt joint with the pressure bar.

In another specific embodiment, the number of the openings is a plurality, the safety baffles are arranged in one-to-one correspondence with the openings,

in the safety baffles, at least 2 rotating shafts of the safety baffles are arranged facing each other, and two sides of the compression bar respectively drive the rotating shafts of the 2 safety baffles to rotate;

and/or

The safety baffle is arranged at one end of the insulating protection plate, which faces the fixed contact.

The various embodiments according to the utility model may be combined as desired and the resulting embodiments after such combination are also within the scope of the utility model and are part of specific embodiments of the utility model.

In order to achieve the second object, the present utility model provides the following solutions:

a drawer seat comprising a main body, a fixed contact and a compression bar device according to any one of the above;

the compression bar device and the fixed contact are all installed in the main body.

In a specific embodiment, the body includes a drawer frame and a bottom panel;

the bottom plate seals one end of the drawer frame;

the static contact comprises a busbar and a chuck, wherein a mounting hole for mounting the busbar is formed in the bottom plate, and the chuck is clamped on the busbar and is used for plugging the connecting bar of the breaker body.

In another specific embodiment, the drawer base further comprises a busbar;

the busbar is arranged at one end of the bottom plate, which is far away from the arc extinguishing chamber of the breaker body;

the busbar is fixed at one end of the busbar, which is away from the chuck.

In another specific embodiment, the busbar comprises a power busbar for externally connecting a power supply and a load busbar for externally connecting a load;

the power supply busbar and the load busbar are horizontally connected,

or,

the power supply busbar and the load busbar are vertically connected,

or,

at least 1 of the power bus bars are horizontally wired, at least 1 of the load bus bars are vertically wired,

or,

at least 1 power busbar vertical connection and at least 1 load busbar horizontal connection;

and/or

The drawer seat also comprises a transmission mechanism, wherein the transmission mechanism is arranged on the main body, and when the current of the external connection piece is overloaded, the transmission mechanism acts to trip.

In order to achieve the third object, the present utility model provides the following solutions:

a direct current circuit breaker comprising a circuit breaker body and a drawer base as claimed in any one of the above;

the breaker body is connected with the drawer seat in a drawing way.

The various embodiments according to the utility model may be combined as desired and the resulting embodiments after such combination are also within the scope of the utility model and are part of specific embodiments of the utility model.

The compression bar device provided by the utility model is arranged on the drawer seat when in use. When the connecting row of the circuit breaker body is required to be connected with the fixed contact of the drawer seat, the safety baffle is opened under the action of the pressure rod to expose the opening on the insulating protection plate, so that the connecting row can penetrate through the opening to be connected with the fixed contact; when the circuit breaker body is disconnected with the drawer seat, the safety baffle blocks the opening on the insulating protection plate, so that the safety risk caused by the exposure of the static contact is avoided, namely the safety protection of the contact of the drawer seat is realized.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without novel efforts for a person skilled in the art.

FIG. 1 is a schematic three-dimensional view of a drawer seat with a safety barrier in a closed state;

FIG. 2 is a schematic three-dimensional view of a drawer seat with a safety barrier in an open state;

fig. 3 is a schematic three-dimensional structure of a drawer base without an insulating protection plate;

FIG. 4 is a schematic view of a partial three-dimensional structure of a drawer seat according to the present utility model;

FIG. 5 is a schematic cross-sectional view of a drawer seat according to the present utility model;

FIG. 6 is a schematic view of a three-dimensional structure of a drawer seat according to the present utility model;

FIG. 7 is a schematic view showing the position of the safety barrier, the compression bar and the elastic restoring member in the closed state;

fig. 8 is a schematic diagram showing the position of the safety barrier, the compression bar and the elastic restoring member in the opened state.

Wherein, in fig. 1-8:

the pressure lever 103, the pressure lever box 105, the pressure lever device 100, the drawer base 1000, the insulating protection board 101, the main body 200, the opening 101a, the fixed contact 300, the safety barrier 102, the elastic reset piece 104, the drawer frame 201, the bottom plate 202, the busbar 400, the power busbar 401, the load busbar 402, the secondary wiring terminal 600, the transmission mechanism 500, the busbar 301, the rotating shaft 108, the driving part 106, and the hinge 107.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 to 8 in the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without novel efforts, are intended to fall within the scope of this utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top surface", "bottom surface", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the indicated positions or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limitations of the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-8, in a first aspect, the present utility model provides a compression bar apparatus 100 for a drawer base 1000 of a circuit breaker, so as to implement safety protection for a static contact 300 of the drawer base 1000 after the drawer base 1000 is separated from a circuit breaker body.

The compression bar device 100 comprises an insulation protection plate 101, a safety baffle 102 and a compression bar 103, wherein the insulation protection plate 101 and the safety baffle 102 are made of insulation materials.

The insulation shield 101 is installed in the main body 200 of the drawer base 1000, and covers the stationary contact 300 in the main body 200. The insulating protection plate 101 is provided with an opening 101a allowing a connection row of the breaker body to pass through, and the connection row is used for plugging the static contact 300. It will be appreciated that the opening 101a corresponds to the position where the connection row connects the stationary contacts 300, so that the connection row can be plugged into the connection row through the opening 101a.

The safety shield 102 is rotatably mounted on the insulating shield 101 by a rotation shaft 108, and the safety shield 102 can be rotated to expose or shield the opening 101a. It should be noted that, the safety barrier 102 may be installed on the end surface of the insulating protection board 101 facing the static contact 300, so as to avoid the safety barrier 102 from being exposed; and the safety baffle 102 can be arranged on the end surface of the insulating protection plate 101, which is away from the fixed contact 300, so that the space between the insulating protection plate 101 and the fixed contact 300 is prevented from being occupied by the safety baffle 102.

The pressing rod 103 is installed in the main body 200 in a pressing manner, and is used for driving the rotating shaft 108 to rotate so as to drive the safety barrier 102 to open and close.

The compression bar device 100 provided by the utility model is used, and the compression bar device 100 is installed on the drawer base 1000. When the connection row of the circuit breaker body is required to be connected with the fixed contact 300 of the drawer base 1000, the safety baffle 102 is opened under the action of the pressure lever 103 to expose the opening 101a on the insulation protection plate 101, as shown in fig. 2, so that the connection row can pass through the opening 101a to be connected with the fixed contact 300; when the circuit breaker body is disconnected from the drawer base 1000, the safety barrier 102 blocks the opening 101a on the insulating protection plate 101, as shown in fig. 1, so as to avoid the safety risk caused by the exposure of the fixed contact 300, namely, the utility model realizes the safety protection of the contact of the drawer base 1000.

In some embodiments, as shown in fig. 5, the compression bar apparatus 100 further includes an elastic restoring member 104, and the elastic restoring member 104 is installed in the main body 200 for driving the compression bar 103 to restore.

Specifically, the elastic restoring member 104 is a spring or the like.

Normally, the safety barrier 102 closes the opening 101a. Note that the normal state refers to a state in which no force is applied to the plunger 103.

When the pressing rod 103 is pressed, the pressing rod 103 overcomes the elastic force of the elastic reset piece 104 to drive the rotating shaft 108 to drive the safety barrier 102 to open so as to expose the opening 101a.

It should be noted that, the driving portion 106 may be disposed on the rotating shaft 108, where the driving portion 106 is fixed on the rotating shaft 108 along a radial direction of the rotating shaft 108, and the driving portion 106 is hinged to the pressing rod 103, so that when a pressure is applied to the pressing rod 103, the pressing rod 103 drives the driving portion 106 to drive the rotating shaft 108 to rotate, so as to drive the safety barrier 102 to open the exposed opening 101a, as shown in fig. 8; when the external force applied to the compression bar 103 disappears, the elastic reset piece 104 drives the compression bar 103 to reset, the compression bar 103 drives the driving part 106 to reversely rotate, and the driving shaft 108 drives the safety barrier 102 to rotate to block the opening 101a, as shown in fig. 7. It will be appreciated that the connection between the plunger 103 and the drive portion 106 may be via a hinge 107 or the like.

Of course, the rotating shaft 108 can be rotatably installed on the insulating protection plate 101 through a torsion spring, the torsion spring drives the safety baffle 102 to block the opening 101a under the action of torsion force, an abutting protrusion is arranged on the outer wall of the rotating shaft 108, a pressing part abutting against the abutting protrusion is arranged on the side wall of the pressing rod 103, and when the pressing rod 103 is pressed, the pressing part presses the abutting protrusion to drive the rotating shaft 108 to overcome the torsion force of the torsion spring, so that the safety baffle 102 is opened to expose the opening 101a. Specifically, the elastic restoring member 104 may be sleeved outside the compression bar 103, where one end abuts against the drawer seat 1000 and the other end abuts against the compression bar 103.

In some embodiments, the compression bar apparatus 100 further includes a compression bar box 105, the compression bar box 105 being mounted on the body 200 and located on one side of the insulating shield 101. The side wall of the compression bar box 105 is provided with a long hole allowing the driving part 106 or the pressing part to pass through, and the long hole is formed along the pressing direction of the compression bar 103.

The depression bar 103 is installed in depression bar box 105, and the top of depression bar 103 extends outside depression bar box 105, and elastic reset piece 104 is installed in depression bar box 105, and the bottom butt of top and depression bar 103. The terms indicating the direction such as the top and bottom of the pressing lever 103 are each set with the direction toward the fixed contact 300 as the bottom and the direction away from the fixed contact 300 as the top, and are not given any particular meaning for convenience of description.

Of course, it is also possible to set the bottom end of the compression bar box 105 to be open, and the elastic restoring member 104 is installed on the main body 200 and passes through the bottom end of the compression bar box 105 to be abutted with the compression bar 103. In order to facilitate guiding the elastic restoring member 104, a guiding convex column may be disposed on the main body 200, and the elastic restoring member 104 is sleeved outside the guiding convex column.

In some embodiments, the number of the openings 101a is plural, and the safety shields 102 are disposed in one-to-one correspondence with the openings 101a.

In the safety shields 102, the rotating shafts 108 of at least 2 safety shields 102 are arranged facing each other, and two sides of the compression bar 103 respectively drive the rotating shafts 108 of 2 safety shields 102 to rotate. I.e. control of 2 safety barriers 102 is achieved by 1 presser bar 103.

It should be noted that the arrangement of the rotating shafts 108 of the 2 safety shields 102 facing each other means that the rotating shafts 108 of the 2 adjacent safety shields 102 are disposed at a side close to each other. That is, the opening and closing rotation directions of the 2 safety shields 102 are opposite. In order to reduce the number of parts, all the safety shields 102 can be arranged, wherein every 2 adjacent safety shields 102 are in 1 group, and the opening and the closing are controlled by the same rotating shaft 108.

In a second aspect, as shown in fig. 1-6, the present utility model provides a drawer base 1000, where the drawer base 1000 includes a main body 200, a stationary contact 300, and a compression bar apparatus 100 according to any of the above embodiments. The compression bar device 100 and the stationary contact 300 are both installed in the main body 200.

In some embodiments, the main body 200 includes a drawer frame 201 and a bottom plate 202, the drawer frame 201 is a rectangular frame, and the top end and the bottom end are both open, and the bottom plate 202 seals one end of the drawer frame 201.

The fixed contact 300 comprises a busbar 301 and a chuck, wherein the bottom plate 202 is provided with a mounting hole for mounting the busbar 301, and the chuck is clamped on the busbar 301 and is used for plugging in a connection bar of the breaker body.

Further, the drawer base 1000 further includes a busbar 400, the busbar 301 is mounted at an end of the base plate 202 remote from the arc extinguishing chamber of the breaker body, and the busbar 400 is fixed at an end of the busbar 301 remote from the clamping head. So set up for female row 400 increases with the distance of explosion chamber, has guaranteed that direct current circuit breaker has sufficient electric gap and creepage distance, the effectual insulating properties when having improved the operation.

Further, the busbar 400 includes a power busbar 401 for external power and a load busbar 402 for external load.

The connection modes of the power supply busbar 401 and the load busbar 402 are not limited, and the power supply busbar 401 and the load busbar 402 can be horizontally connected, the power supply busbar 401 and the load busbar 402 can be vertically connected, at least 1 power supply busbar 401 can be horizontally connected, at least 1 load busbar 402 can be vertically connected, or at least 1 power supply busbar 401 can be vertically connected, at least 1 load busbar 402 can be horizontally connected, and the like.

Here, the horizontal connection is set in the direction shown in fig. 6, and the connection method shown in fig. 6 is set as the horizontal connection.

In some embodiments, the drawer base 1000 further includes a transmission mechanism 500, where the transmission mechanism 500 is mounted on the main body 200, and when the current of the external busbar 400 is overloaded, the transmission mechanism 500 is tripped, so that overload, short delay, and instantaneous protection of the dc breaker can be achieved.

In some embodiments, the drawer housing 1000 further includes a secondary terminal 600, the secondary terminal 600 being mounted on the body 200.

A third aspect of the present utility model provides a dc circuit breaker, including a circuit breaker body and a drawer base 1000 according to any one of the embodiments described above, where the circuit breaker body is connected to the drawer base 1000 in a retractable manner.

Since the dc breaker provided by the present utility model includes the drawer base 1000 in any of the embodiments, the drawer base 1000 has the advantages of the dc breaker provided by the present utility model.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (10)

1. A compression bar arrangement (100) for a drawer base (1000), comprising:

the insulation protection plate (101), the insulation protection plate (101) is arranged in the main body (200) of the drawer seat (1000), and covers the static contact (300) in the main body (200), the insulation protection plate (101) is provided with an opening (101 a) allowing a connection row of the circuit breaker body to pass through, and the connection row is used for plugging the static contact (300);

a safety shield (102) rotatably mounted on the insulating shield plate (101) through a rotation shaft (108), the safety shield (102) being rotatable to expose or block the opening (101 a);

the pressing rod (103) can be installed in the main body (200) in a pressing mode, and is used for driving the rotating shaft (108) to rotate so as to drive the safety barrier (102) to open and close.

2. The compression bar apparatus (100) of claim 1, further comprising a resilient return member (104);

the elastic reset piece (104) is arranged in the main body (200) and is used for driving the compression bar (103) to reset;

normally, the safety barrier (102) blocks the opening (101 a);

when the pressure lever (103) is pressed, the pressure lever (103) overcomes the elastic force of the elastic reset piece (104) to drive the rotating shaft (108) to drive the safety baffle (102) to open so as to expose the opening (101 a).

3. The compression bar apparatus (100) according to claim 2, wherein a driving part (106) is provided on an outer wall of the rotation shaft (108), and a side wall of the compression bar (103) is hinged with the driving part (106);

or alternatively

The rotary shaft (108) is rotatably installed on the insulating protection plate (101) through a torsion spring, the torsion spring drives the safety baffle (102) to seal the opening (101 a), an abutting protrusion is arranged on the outer wall of the rotary shaft (108), a pressing part abutting against the abutting protrusion is arranged on the side wall of the pressing rod (103), and when the pressing rod (103) is pressed, the pressing part presses the abutting protrusion to drive the rotary shaft (108) to overcome torsion of the torsion spring, so that the safety baffle (102) is opened to expose the opening (101 a).

4. The compression bar apparatus (100) of claim 3, further comprising a compression bar box (105);

the compression bar box (105) is arranged on the main body (200) and is positioned on one side of the insulating protection plate (101);

the compression bar (103) is arranged in the compression bar box (105), the top end of the compression bar (103) extends out of the compression bar box (105), a long strip hole allowing the driving part (106) or the pressing part to pass through is formed in the side wall of the compression bar box (105), and the long strip hole is formed along the pressing direction of the compression bar (103);

the elastic reset piece (104) is arranged in the pressure bar box (105), and the top end of the elastic reset piece is abutted with the pressure bar (103);

or,

the bottom end of the pressure bar box (105) is arranged in an open mode, and the elastic reset piece (104) is installed on the main body (200) and penetrates through the bottom end of the pressure bar box (105) to be in butt joint with the pressure bar (103).

5. The compression bar apparatus (100) as claimed in any one of claims 1-4, wherein the number of openings (101 a) is plural, and the safety barriers (102) are arranged in one-to-one correspondence with the openings (101 a),

in the safety baffles (102), at least 2 rotating shafts (108) of the safety baffles (102) are arranged facing each other, and two sides of the compression bar (103) respectively drive the rotating shafts (108) of the 2 safety baffles (102) to rotate;

and/or

The safety shield (102) is mounted on an end of the insulating protection plate (101) facing the fixed contact (300).

6. A drawer seat (1000), characterized by comprising a main body (200), a stationary contact (300) and a compression bar arrangement (100) according to any one of claims 1-5;

the compression bar (103) device and the fixed contact (300) are arranged in the main body (200).

7. The drawer base (1000) of claim 6, wherein the main body (200) includes a drawer frame (201) and a floor (202);

the bottom plate (202) seals one end of the drawer frame (201);

the static contact (300) comprises a busbar (301) and a chuck, wherein the bottom plate (202) is provided with a mounting hole for mounting the busbar (301), and the chuck is clamped on the busbar (301) and is used for being inserted into a connecting bar of the breaker body.

8. The drawer base (1000) of claim 7, further comprising a busbar (400);

the busbar (301) is arranged at one end of the bottom plate (202) far away from the arc extinguishing chamber of the breaker body;

the busbar (400) is fixed at an end of the busbar (301) facing away from the collet.

9. The drawer housing (1000) of claim 8, wherein the busbar (400) comprises a power busbar (401) for external power and a load busbar (402) for external load;

the power supply busbar (401) and the load busbar (402) are horizontally connected,

or,

the power supply busbar (401) and the load busbar (402) are all vertically connected,

or,

at least 1 of said power bus bars (401) are wired horizontally, at least 1 of said load bus bars (402) are wired vertically,

or,

at least 1 of the power supply busbar (401) is vertically wired, and at least 1 of the load busbar (402) is horizontally wired;

and/or

The drawer seat (1000) further comprises a transmission mechanism (500), the transmission mechanism (500) is installed on the main body (200), and when the current of an external connector is overloaded, the transmission mechanism (500) acts to trip.

10. A direct current circuit breaker, characterized by comprising a circuit breaker body and a drawer base (1000) according to any of claims 6-9;

the breaker body is connected with the drawer seat (1000) in a drawing way.